[ARC5] TBW pics in field use

[Paul Thekan]

Thanks fellows for the replies...
Tim, that was a fun Meet now almost 10 years ago. Your hands on display
with the GRC 9 and the kids cranking away on the GN-58 was the highlight of
the radio display!
The TBW/RBM was just a static display with the SCR 177. The operational SCR
499 was more work than I anticipated...getting old.
I have the gas gen set and the electric motor driven gen set for the TBW.
 Chris very interesting that Byrd had of all things a TBW set up in the
South Pole. Thanks for that and I'll look into that ...
 Steve..yes I've spoken to Charlie about his TBW...and that would have been
a lot of work hauling it to Browns to set up...I think those get together
at the Fort was for Field Day.  And thanks for posting that pic of the
Jefferson Travis JT 350 to Brown...still looking for a junker set for parts
especially the freq dials for mine.

73
Paul
N6FEG



On Tue, Sep 30, 2025, 8:05 PM kd3ht at epix.net <kd3ht at epix.net> wrote:

> I believe at one of w1nzr radio events, ka1gon brought his tbw/rbm system
> and set it up.  not a military use, but followed the manual.
>
> I'll see if any photographs exist I can get a scan of.
>
> Steve, kd3ht
>
>
> Sent from Yahoo Mail for iPhone
> <https://mail.onelink.me/107872968?pid=nativeplacement&c=Global_Acquisition_YMktg_315_Internal_EmailSignature&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000604&af_sub5=EmailSignature__Static_>
>
> On Tuesday, September 30, 2025, 18:43, Christopher Bowne <
> aj1g at sbcglobal.net> wrote:
>
> Beautiful setup!  According to the book 90 South by Admiral Richard Byrd,
> a TBW was flown into South Pole Station to serve as its first main HF
> transmitter during the building of the base in the 1950s.  I don’t know if
> there are any photos of it.  It’s not stated what the first HF  transmitter
> used there was, but apparently it was a much lower power unit, based on the
> discussion about the TBW set’s arrival.  Perhaps an RT-77/GRC-9?
>
> Maybe Mike, WU2D knows!  He did an excellent article for the AWA and
> Electric Radio on the subject of radios used by the Byrd Antarctic
> expeditions.
>
> Charlie, KA1GON has a complete TBW/RBM field system, IIRC including the
> gas powered 800 Hz genset.
>
> 73 de Chris AJ1G
> Stonington CT
> Sent from my iPhone
>
> On Sep 30, 2025, at 15:09, Tim <timsamm at gmail.com> wrote:
>
> 
> Hi Paul - Well the only TBW set that I've seen was set up about 50 miles
> from the Pacific Ocean.
> It's YOURS in case people don't know what a TBW consists of...LOL
> https://www.n6cc.com/wp-content/uploads/IMG_0941.jpg
> Cheers and Great Job!  Let's do that again sometime...
> Tim
> N6CC
>
> On Tue, Sep 30, 2025 at 11:07 AM Paul Thekan <pfthekan at gmail.com> wrote:
>
> G'day all
>  I've never seen a pic of the TBW/RBM sets deployed in the the field other
> than the staged pic in the manual. I've seen some pics of the set up inside
> a building..but never in operation out in the Pacific war.
>  Has any one..maybe I've missed something??
> Tnx
> Paul
> N6FEG
>
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